Thermostatic control for steam-traps.



w. WfSTUBBS.

THERMOSTATIC CONTROL FOR STEAM TRAPS.

APPLICATION FILED Nov. 19. 191;.

1,172,751. Patented Feb.22,1916.

w b w 'k 19 I u TE. t i :1 15- j {M 437 4) $518 Gum sXim amm THECOLUMBIA PLANOGRAPH co.. WASHIN c.

UNITED STATES PATENT onnrcn. I

WILLIAM W. STUBBS, OF COUNCIL BLUFFS, IOWA, ASSIG-NOR TO ANTON PAWOL, OF

OMAHA, NEBRASKA. v

THERMOSTATIC CONTRQL FOR STEAM-TRAPS.

Specification of Letters Patent.

Application filed November 19, 1915. Serial No. 82,383;

'To all whom 2'25 may concern:

Be it known that I, VVILLIAM W. STUBBs, a citizen of the United States,residing at Council Bluffs, in the county of Pottawattamie and State ofIowa, have invented certain new and useful Improvements in ThermostaticControl for Steam-Traps, of which the following is a specification.

This invention relates to a thermostatic control for steam traps of theclass used in connection with steam heating systems, power systemsand'the like, and has for its object to provide means by use of whichthe temperature of steam may be regulated, and thereby preventingcondensation and accumulation of dead steam, which, together with anexcess of water often causes vibration of the pipes and radiators, andother undesirable features including loss of power Another object is toprovide such a construction that the parts may be economicallymanufactured, will be durable, and will be automatic in operation.

With the foregoing objects in view and others to be mentionedhereinafter, the invention consists of the novel construction,combination and arrangement of parts as described herein and claimed andas illustrated in the accompanying drawing, wherein,-

Figure 1 is a sectional view through the casing and cap in line with itsintake and exit port. Fig. '2 is a plan view of the casing, the capbeing removed, and a part broken away and in section.

Referring now to the drawing for a more particular description, numeral3 indicates a casing which provides an annular chamber 4 having a screwcap 5 in which, at its middle, is threaded a valve stem 6 of the valve7, a suitable packing chamber 8 provided with a cap 9 being employed forthe mounting of said stem. The intake for the casing or chamber 4 isindicated at 10,and a conducting pipe 11 is shown which may communicatewith any required steam supply or generator for steam.

The outlet controlled by valve 7 is indicated at 12, a pipe 13beingshownfor conducting steam from the chamber 4, for use as power or forheating, or other purposes. In

order that condensed steam may be automatically removed and that thesteam may have, substantially, a uniform temperature in the pipes, asecond valve 14 is provided for a control of a second outlet indicatedat 15, this valve being provided with a short stem 16 which projectsinwardly of the annular chamber 4; At 17 isindicated a receptacle ofsemicircular form, and, preferably, it has an irregular curvature. Itswall is of elliptical form in cross-section, and it is disposed edgewisein the chamber of the casing, its middle part being disposed near theintake 10, so that, in a measure, it will partly obstruct a freemovement of steam passing within the casing from pipe 11', to quicklyattain the same temperature as that of the moving contents of said pipe.

One of the ends of the receptacle 17 is provided with a head ahaving anaperture formed therein so that the chamber within thehead and thereceptacle 17 which communicates therewith, may be filled withmercury'or any fluid or liquid which serves as a suitable conductor ofheat or cold, a screw 6 being shown for making a closure of'saidaperture. f

The head portion a is provided with a flange or base 0, and by means ofthe screw 19, the receptacle may be adjustably secured tothe bottom ofthe casing. A rock lever 18 is provided, its arm e being flexiblyconnected with the end of the'receptacle 17, adjacent thereto.

In order that the valve 14 may be under direct and effective control ofthe rock lever for a suitable contact with or withdrawal Patented Feb. 22, 1916.

of said valve from its seat, the terminal of the arm d is provided withcurved prongs or bearings 70 within which is loosely seated the stem 16of said valve, and, by means of the pivot-pin h, best shown in Fig. 1,the flexible connection is made.

At the terminal of the hollow, semi-circular receptacle, opposite to itsfilling-chamber or head a, said receptacle is provided with cars 20, towhich the arm 6 of the rock lever is pivoted, and as thus described, therock lever may have swinging movements on its pivot 21 for a control ofthe valve 14, said lever being under control of the thermostat orreceptaclelT.

In operation, when the steam decreases in temperature, the receptacle 17will be reduced in length, and thereby the valve 14 will leave its seatto permit water, vapor or main thus seated until condensation of steamwill presently result and will cause the steam to return to a suitabletemperature.

Among some-of the advantages to be derived by use of the device it maybe stated inwardly, so that the cars will be disposed 1 nearer to theadjacent wall of the casing, and by this adjustment, the valve let willbe withdrawn, slightly, from its seat, with the result that a higherdegree of heat for the steam will be required for seating said valve anda higher degree of temperature for steam may be maintained. It will beappreciated that this adjustable feature is of importance, since it maybe conveniently made, and in many instances, such as the quality of thewater used for producing steam, or for changes in climate or weatherconditions where steam is used forheating, it is desirable to makesuitable adjustments so that the steam will have a suitable temperature.Another advantage is the fact that the receptacle 17 is elliptical incross section andis disposed edgewise or with its transverse axis ofgreater diameter substantially at right angles to the intake pipe, sothat heat coming from. said pipe will be readily absorbed. Theadvantages of this last named feature will be appreciated since,

in order that durability may be attained,:the jacket for this member 17,is preferably constructed of metal, and it'is, of course,- de sirablethat said acket, as well as its conparts required are few in number,and.

manufacture will be comparatively inexpensive.

What I claim, and desire to secure by Letters Patent is,-

A steam trap, having in combination, an annular casing provided with ascrew cap, an intake, an outlet, a valve seat and valve in the outlet,an elongated semicircular receptacle disposed within and adjacent to theside wall of the casing, said receptacle being provided at one of its.ends With a head having a flange projecting toward the middle of thecasing, a rock lever having its respective ends flexibly connected withthe valve and opposite end of the receptacle, and a keeper traversingthe flange ofthe receptacle and engaging the bottom of the casing foradjusting the valve longitudinallyof the valve seat and to-maintain thesignature inpresence of a Witness.

VILLIAM \V. STUBBS.

Witness HIRAM A. STURGES.

Copies of thispatent may be obtained'for five cents each, by addressingthe Commissioner of Patents Washington, D. G.

